Sponge



FIG. 1 is a perspective view of a sponge showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a right side elevational view thereof;

FIG. 8 is a cross-sectional view thereof, taken along line 8-8 of FIG. 6;

FIG. 9 is a cross-sectional view thereof, taken along line 9-9 of FIG. 6; and,

FIG. 10 is a cross-sectional view thereof, taken along line 10-10 of FIG. 6.

The cross-hatching in FIGS. 8, 9, and 10 symbolizes the interior of the sponge, and forms no part of the claimed design. 

CLAIM The ornamental design for a sponge, as shown and described. 